package jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Scanner;

public class JDBCDemo7 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入用户名");
        String username = sc.nextLine();
        System.out.println("请输入密码");
        String password = sc.nextLine();
        try(Connection connection = DBUtil.getConnection()){
            String sql = "SELECT username FROM userinfo WHERE username = ? AND password = ?";
            PreparedStatement ps = connection.prepareStatement(sql);
            ps.setString(1,username);
            ps.setString(2,password);
            ResultSet rs = ps.executeQuery();
            while(rs.next()){
                System.out.println("登录成功");
                System.out.println("欢迎"+rs.getString(1));
            }
        }catch (SQLException e){
            throw new RuntimeException(e);
        }
    }
}
